Wolfram Demonstrations Project
Plane Geometry
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Demonstrations 1 - 20 of 1018
Enlargement in Two DimensionsTriangle AltitudeTiles with Finite Convex SpectraTangent Circles to Two Parallel Lines and Passing through a PointJapanese Theorem for Cyclic Polygons
Enlargement in Two Dimensions
Updated this month
Triangle Altitude
New this month
Tiles with Finite Convex Spectra
Tangent Circles to Two Parallel Lines and Passing through a Point
Japanese Theorem for Cyclic Polygons
Irregular TilingsTetradsHirano's Construction of a Regular PentagonMaking the Three Areas Defined by Congruent Overlapping Circles EqualOn Which Side of a Directed Line Is a Point?
Irregular Tilings
Tetrads
Hirano's Construction of a Regular Pentagon
Making the Three Areas Defined by Congruent Overlapping Circles Equal
On Which Side of a Directed Line Is a Point?
Brianchon's TheoremAngle of Intersection of Two CirclesMultiple Reflections in Two MirrorsThe Pedal and Antipedal TrianglesExact Trilinear Coordinates
Brianchon's Theorem
Angle of Intersection of Two Circles
Multiple Reflections in Two Mirrors
The Pedal and Antipedal Triangles
Exact Trilinear Coordinates
Orthologic TrianglesThe Geometry of the Steiner Tree Problem for up to Five PointsConstructing a Steiner Tree for Five PointsCircle Inversion of Basic FiguresCumulative Area under a Cycloid versus the Area of Its Rolling Circle
Orthologic Triangles
The Geometry of the Steiner Tree Problem for up to Five Points
Constructing a Steiner Tree for Five Points
Circle Inversion of Basic Figures
Cumulative Area under a Cycloid versus the Area of Its Rolling Circle

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